
LONGi has unveiled an upgraded Hi-MO 9 module powered by its HPBC 2.0 technology. Since its debut last year, the module has earned global recognition for its excellent power generation performance, with the latest iteration achieving a groundbreaking 24.8% conversion efficiency and a maximum power output of 670W, outperforming mainstream TOPCon modules by 40W in mass production.
The optimized rear-side grid design, enabled by 0BB (0 Busbar) technology, elevates bifaciality to over 80%, significantly enhancing overall energy yield. Compared to TOPCon equivalents, Hi-MO 9 delivers a 1.5% efficiency gain and increases installed capacity by approximately 6.4% based on an equivalent land area. The module also demonstrates exceptional resilience in challenging environments including partial shading, high-temperature/high-humidity and low-light scenarios.
LONGi has also announced a groundbreaking achievement in high-efficiency PV cell technology, setting a hitherto unprecedented conversion efficiency world record of 27.81%, based on its self-developed HIBC (Heterojunction Interdigitated Back Contact) silicon solar cells, certified by Germany’s ISFH.

Further amplifying the market potential of high-efficiency BC technology, the company has partnered with TÜV Rheinland to launch a “Global Optimal BC Solar Power Plant Design Challenge”, a competition open to consultancies, EPCs and renewable energy investors to propose innovative designs for ground-mounted power plant projects exceeding 50MW across diverse application scenarios.
LONGi VP Dennis She commented: “BC technology represents the ultimate advancement in crystalline silicon solar cells. With a mature global ecosystem, high-efficiency BC modules are rapidly being deployed across diverse applications. The upgraded Hi-MO 9, powered by HPBC 2.0, will deliver unparalleled value to customers worldwide. We are committed to sharing BC innovations with global partners to build a sustainable future.”
The company’s global order book for BC modules has already exceeded 40GW.